Everyone is aware of the devastating flood in Nepal on 26 August 2026, when an ice & rock collapse was followed by temporary damming of Lhende Khola and a sudden flood surge. That day, a major flood hit the area around the Nepal-Tibet border, causing significant human and infrastructure damage in Rasuwa, Nepal. It also had a huge impact on Kyirong in Tibet, China.
The flood started after a large mass of ice, glacier, and rock broke away from a mountain. The falling ice and rocks entered the Lhende Khola (also known as Lende River or Donglin Tsangpo in Lhasa Tibetan) and blocked the river for some time. Temporarily dammed the river caused water to build up upstream. When the temporary blockage failed, a powerful surge of water and debris rushed downstream.
Nepal’s geography made the flood situation particularly dangerous. The Lhende and Bhote Koshi rivers flow through steep, narrow Himalayan valleys where a sudden release of water and debris could travel rapidly with destructive force. The flood damaged houses, roads, bridges, hydropower projects, and other infrastructure, causing over US$2.64 billion in property damage.
The important Rasuwagadhi-Gyirong border area was also badly damaged, ultimately affecting transportation and trade between Nepal and Tibet. Many people in Nepal were killed or went missing in the Nepal-Tibet flood, including the workers at hydropower projects and construction sites. By 8 September 2026, reports indicated that the death toll in Nepal and Tibet had reached at least 1,399, while more than 5,400 people remained missing, including Nepali citizens and foreign nationals.
Search and rescue operations are still underway, with teams from India, China, the UAE, Malaysia, and the Republic of Korea. Some survivors were rescued from hydropower tunnels and flood-damaged areas even more than a week after the disaster. Sadly, some victims’ bodies were carried downstream as far as 240 km (150 mi) into neighboring India.
Unlike a monsoon flood caused by heavy rainfall, this disaster was triggered by a high-altitude ice and rock collapse. It shows how ice, rocks, rivers, and unstable mountain slopes can create a very dangerous natural disaster.
For daily situation updates regarding the flood, check the official site of the Government of Nepal.
What Caused This Nepal-Tibet Flood on 26 August
A sudden ice and rock avalanche in the high Himalayas mainly caused the Nepal-Tibet flood on 26 August 2026. Still, scientists are continuing to investigate the event and determine its exact cause. The main trigger was a sudden collapse of glacier ice and rock near Langtang Lirung. The collapse happened at an altitude of 5,200-5,400 meters and involved a huge mass of ice and rock falling about 1,200 meters into the valley.
The falling material generated big force and quickly entered the water system. This caused the ice and rock to break apart and mix with water, creating a powerful debris flow of mud, rocks, and other material. This moved rapidly downstream through the Lhende Khola and into the Bhote Koshi-Trishuli river system. The debris flowed about 100 kilometers downstream, with the flood’s destructive power increasing.
Another cause of the Nepal-Tibet flood is climate change and the changing conditions in the Himalayan regions, although it has not been proven to be the direct cause of this collapse. Rising temperatures can make glaciers and frozen ground less stable, contributing to the disaster. But scientists are still studying exactly how climate change was connected to this event.
However, if climate change has a major role in causing the disaster, Nepal has the full right to demand climate justice. This is because Nepal contributes less than 0.1% of global greenhouse gas emissions and is doing its part by increasing tree planting, as the country’s forests cover more than 46%. Still, it is the country that faces all the climate impacts, which is unfair. Also, Nepal’s share of global carbon emissions is close to zero, but it’s one of the countries paying the price.
How the Flood has Impacted a Major Trekking Destination of Nepal
As a country that heavily depends on tourism, Nepal has been hit by floods that have affected trekking destinations and, ultimately, its economy. Trekking regions, especially Langtang, are affected because nearby areas like Syabrubesi and Timure are heavily impacted. However, if you still wish to trek in the region, you can consider alternative routes such as Sundarijal-Chisapani, while Kyanjin Gompa and Gosaikunda remain unaffected by the flood. Or wait a few weeks until the situation improves.
Likewise, the Nepal route to Kailash Mansarovar is affected because of the damaged Rasuwagadhi/Kerung corridor. Also, the district administration office in Gorkha has informed people not to take the Manaslu Circuit roure, not because of the Nepal-Tibet flood but because of flooding in the Therang Khola (stream) in Chum Nubri-4. This is expected to reopen soon, so stay informed. Moreover, avoid any destination that involves traveling via Dhunche, Syabrubesi, Malekhu-Dhanding Besi, and Benighat-Arughat route.
Besides, other trekking regions are safe to travel as per the notice issued by the Trekking Agencies’ Association of Nepal (TAAN), including:
- Kanchenjunga Section
- Makalu Section
- Everest Section
- Rolwaling Section
- Helambu Section
- Annapurna Section (Manang and Mustang)
- Dhaulagiri Section
- Dolpa Section
- Rara and Jumla Section
- Humla Section
- Far West (Khaptad, Badimalika, Saipal, Api Himal)
So, much of Nepal is still safe and open for travelers worldwide. One of the most meaningful ways you can support Nepal during this difficult time is to still travel, explore its beauty, and show it to the world. When trekkers and travelers cancel their plans with the misconception that the whole country is affected, the economic impact spreads even further. Right now, traveling to Nepal is more than leisure and holidays; it supports the country and its entire economy. So, Nepal still welcomes you; travel responsibly, stay informed, follow official updates, and don’t travel to affected areas. Right now, visiting Nepal means being part of the country’s recovery.
